:root {
    --background-color: #2c3e50;
    --border-color: #7591AD;
    --text-color: #34495e;
    --color1: #EC3E27;
    --color2: #fd79a8;
    --color3: #0984e3;
    --color4: #00b894;
    --color5: #fdcb6e;
    --color6: #e056fd;
    --color7: #F97F51;
    --color8: #BDC581;
}

* {
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
}

body {
    width: 100vw;
    height: 100vh;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Montserrat', sans-serif, Arial, 'Microsoft Yahei';
}

.channel {
    position: absolute;
    width: 80%;
    text-align: center;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -200px);
    font-size: 30px;
    font-weight: bold;
    color: #fff;
}

.loader {
    position: relative;
    width: 100px;
    height: 100px;
    /* 透明色 */
    border: 2px solid transparent;
    border-top-color: var(--color3);
    border-radius: 50%;
    animation: spin 2s linear infinite;
}

.loader::after,
.loader::before {
    position: absolute;
    content: "";
    border: 2px solid transparent;
    /* 颜色继承 */
    border-top-color: inherit;
    border-radius: 50%;
}

.loader::after {
    top: 7px;
    left: 7px;
    right: 7px;
    bottom: 7px;
    animation: spin 1.5s linear infinite;
}

.loader::before {
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    animation: spin 0.5s linear infinite reverse;
}

@keyframes spin {
    0% {
        transform: rotate(0deg)
    }
    100% {
        transform: rotate(360deg)
    }
}